DIN EN 14399-7-2008 High-strength structural bolting assemblies for preloading - Part 7 System HR - Countersunk head bolt and nut assemblies English version of DIN EN 14399-7 2008-.pdf

1、March 2008DEUTSCHE NORM English price group 12No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 21.060.01!$MY,“1425409ww

2、w.din.deDDIN EN 14399-7High-strength structural bolting assemblies for preloading Part 7: System HR Countersunk head bolt and nut assembliesEnglish version of DIN EN 14399-7:2008-03Hochfeste planmig vorspannbare Schraubenverbindungen fr den Metallbau Teil 7: System HR Garnituren aus Senkschrauben un

3、d MutternEnglische Fassung DIN EN 14399-7:2008-03www.beuth.deDocument comprises 23 pagesDIN EN 14399-7:2008-03 2 National foreword This standard has been prepared by Technical Committee CEN/TC 185 “Fasteners” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was th

4、e Normenausschuss Mechanische Verbin-dungselemente (Fasteners Standards Committee), Technical Committee NA 067-03-04 AA Schraubenverbin-dungen fr den Stahlbau. Countersunk head bolts as in this standard have full loadability in accordance with their property class as in ISO 898-1. This means that th

5、ey can withstand the minimum ultimate tensile loads specified in ISO 898-1 and that failure due to overloading during tensile loading occurs in the free threaded length. The European Standards referred to in clause 2 of the EN have been published as the corresponding DIN EN Standards with the same n

6、umber. The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows: ISO 261 DIN ISO 261 ISO 965-2 DIN ISO 965-2 ISO 965-5 DIN ISO 965-5 National Annex NA (informative) Bibliography DIN ISO 261, ISO general purpose metric screw threads General plan

7、DIN ISO 965-2, ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for general DIN ISO 965-5, ISO general purpose metric screw threads Tolerances Part 5: Limits of sizes for internal screw threads to mate with hot-dip galvanized external screw threads with maximum size of tol

8、erance position h before galvanizing purpose external and internal screw threads; medium quality EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14399-7 December 2007 ICS 21.060.01 English Version High-strength structural bolting assemblies for preloading - Part 7: System HR - Countersunk head

9、bolt and nut assembliesBoulonnerie de construction mtallique haute rsistance apte la prcontrainte - Partie 7: Systme HR - Boulons tte fraise (vis et crou) Hochfeste planmig vorspannbare Schraubenverbindungen fr den Metallbau - Teil 7: System HR - Garnituren aus Senkschrauben und Muttern This Europea

10、n Standard was approved by CEN on 10 November 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references con

11、cerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its

12、own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithu

13、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007

14、 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14399-7:2007: EEN 14399-7:2007 (E) Contents Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Bolts 6 5 Nuts .12 6 Designation of the counters

15、unk head bolt/nut assembly .16 7 Associated washers 16 8 Functional characteristics of the bolt/nut/washer(s) assembly17 Bibliography 21 Figures Figure 1 Dimensions of bolts Table 2 Dimensions of bolts a.7 Figure 2 Example for marking of a bolt 12 Figure 3 Dimensions of nuts 12 Figure 4 Example for

16、marking of a nut.16 Figure 5 Adapter.17 Figure 6 Test set-up .18 Tables Table 1 Systems of bolt/nut/washer(s) assemblies4 Table 2 Dimensions of boltsa.8 Table 3 Specifications for bolts and reference standards11 Table 4 Dimensions of nuts a.13 Table 5 Specifications for nuts and reference standards.

17、14 Table 6 Proof load values of nuts.15 Table 7 Hardness values of nuts, if specified 15 Table 8 Characteristics of adapters .17 Table 9 Values for 119 Table 10 Values for 219 Page DIN EN 14399-7:2008-03 2EN 14399-7:2007 (E) Foreword This document (EN 14399-7:2007) has been prepared by Technical Com

18、mittee CEN/TC 185 “Fasteners”, the se-cretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2008, and conflicting national standards shall be withdrawn at the lat

19、est by June 2010. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun-tries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Den-mark, Estonia, Finland, France, Germany, Greece, Hungary, Icela

20、nd, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 14399-7:2008-03 3EN 14399-7:2007 (E) Introduction This document for structural bolting reflects the situation in Eur

21、ope where two technical solutions exist to achieve the necessary ductility of bolt/nut/washer assemblies. These solutions utilize different systems (HR and HV) of bolt/nut/washer assemblies, see Table 1. Both systems are well proved and it is up to the experts responsible for structural bolting whet

22、her they use the one or the other system. It is however important for the performance of the assembly to avoid mixing up the components of both systems. Therefore bolts and nuts for both systems are standardized in one single part of this European Standard each and the marking of the components of t

23、he same system is uniform. Table 1 Systems of bolt/nut/washer(s) assemblies Bolt/nut/washer(s) assembly System HR Bolt/nut/washer(s) assembly System HV General requirements EN 14399-1 Bolt/nut assemblies EN 14399-3, EN 14399-7 EN 14399-4, EN 14399-8 Marking HR HV Property classes 8.8/8 or 8.8/10 10.

24、9/10 10.9/10 Washer(s) EN 14399-5 or EN 14399-6 EN 14399-5 or EN 14399-6 Marking H H Suitability test for preloading EN 14399-2 EN 14399-2 Preloaded bolted assemblies are very sensitive to differences in manufacture and lubrication. Therefore it is important that the assembly is supplied by one manu

25、facturer who is always responsible for the function of the assembly. For the same reason it is important that the coating of the assembly is under the control of the manufacturer. Beside the mechanical properties of the components, the functionality of the assembly requires that the specified pre-lo

26、ad can be achieved if the assembly is tightened with a suitable procedure. For this purpose a test method for the suitability of the components for preloading was created which will demonstrate whether the function of the assembly is fulfilled. Attention is drawn to the importance of ensuring that t

27、he bolts are correctly used if satisfactory results are to be ob-tained. For recommendations concerning proper application, reference to prEN 1090-2 is made. DIN EN 14399-7:2008-03 4EN 14399-7:2007 (E) 1 Scope This document belongs to the suite of European Standards EN 14399 and is designed to be re

28、ad in conjunction with EN 14399-1 for: general requirements; testing for conformity evaluation; evaluation of conformity; regulatory marking; for assemblies of high-strength structural countersunk bolts and nuts of system HR suitable for preloaded joints with thread sizes M12 to M36 and bolt propert

29、y classes 8.8 and 10.9 and EN 14399-2 for suitability testing. This document gives requirements for: dimensions; associated washer(s) according to EN 14399-5 or to EN 14399-6; performance and suitability tests; for assemblies with thread sizes M12 to M36 and bolt property classes 8.8 and 10.9. Count

30、ersunk bolt and nut assemblies to this document have been designed to allow preloading of at least 0,7 fub As1)according to EN 1993-1-8 (Eurocode 3) and to obtain ductility predominantly by elongation of the bolt. For this purpose the components have the following characteristics: nut height accordi

31、ng to style 1 (see EN ISO 4032), thread length of the bolt according to ISO 888. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the r

32、eferenced document (including any amendments) applies. EN 1993-1-8, Eurocode 3: Design of steel structures Part 1-8: Design of joints EN 10045-1, Metallic materials - Charpy impact test - Part 1: Test method EN 14399-1:2005, High-strength structural bolting assemblies for preloading - Part 1: Genera

33、l requirements EN 14399-2:2005, High-strength structural bolting assemblies for preloading - Part 2: Suitability test for preloading EN 14399-5, High-strength structural bolting assemblies for preloading - Part 5: Plain washers EN 14399-6, High-strength structural bolting assemblies for preloading -

34、 Part 6: Plain chamfered washers 1) fubis the nominal tensile strength (Rm) and Asis the nominal stress area of the bolt. DIN EN 14399-7:2008-03 5EN 14399-7:2007 (E) EN 20898-2, Mechanical properties of fasteners - Part 2: Nuts with specified proof load values - Coarse thread (ISO 898-2:1992) EN 261

35、57-1, Fasteners - Surface discontinuities - Part 1: Bolts, screws and studs for general requirements (ISO 6157-1:1988) EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts, screws and studs (ISO 898-1:1999) EN ISO 3269, Fasteners - Acceptance inspecti

36、on (ISO 3269:2000) EN ISO 4032, Hexagon nuts, style 1 - Product grades A and B (ISO 4032:1999) EN ISO 4759-1, Tolerances for fasteners - Part 1: Bolts, screws, studs and nuts - Product grades A, B and C (ISO 4759-1:2000) EN ISO 6157-2, Fasteners - Surface discontinuities - Part 2: Nuts (ISO 6157-2:1

37、995) EN ISO 10684, Fasteners - Hot dip galvanized coatings (ISO 10684:2004) ISO 148-1, Metallic materials - Charpy pendulum impact test - Part 1: Test method ISO 261, ISO general purpose metric screw threads General plan ISO 888, Bolts, screws and studs Nominal lengths, and thread lengths for genera

38、l purpose bolts ISO 965-2, ISO general purpose metric screw threads - Tolerances - Part 2: Limits of sizes for general purpose ex-ternal and internal screw threads - Medium quality ISO 965-5, ISO general purpose metric screw threads - Tolerances - Part 5: Limits of sizes for internal screw threads t

39、o mate with hot-dip galvanized external screw threads with maximum size of tolerance position h before galvanizing 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 14399-1:2005 and 14399-2:2005 apply. 4 Bolts 4.1 General The test method for suitability

40、 for preloading shall be as specified in EN 14399-2. 4.2 Dimensions of bolts See Figure 1 and Table 2. DIN EN 14399-7:2008-03 6EN 14399-7:2007 (E) The difference between lgand lsshall not be less than 1,5 P. aIncomplete thread u 2P Figure 1 Dimensions of bolts DIN EN 14399-7:2008-03 7EN 14399-7:2007

41、 (E) Table 2 Dimensions of bolts aDimensions in millimetresThread d M12 (M14)b M16 (M18)b M20 Pc 1,75 2 2 2,5 2,5 d 30 34 38 42 46 e 40 44 48 52 b (ref.) f 65 max. 12,70 14,70 16,70 18,70 20,84 dsmin. 11,30 13,30 15,30 17,30 19,16 max. 24,00 28,00 32,00 36 40 dkmin. 23,16 27,16 31,16 35 39 max. 16,5

42、 19,5 22,5 25,5 28,5 i min. 15,5 18,5 21,5 24,5 27,5 nom. 8,00 9,00 10,00 12,0 13,0 max.i8,75 9,75 10,75 12,9 13,9 kmin.j7,25 8,25 9,25 11,1 12,1 max. 1,6 1,6 1,6 2 2 r min. 1,2 1,2 1,2 1,5 1,5 max. 3,0 3,0 3,0 3,5 3,5 n min. 2,5 2,5 2,5 3,0 3,0 t max. 4,5 4,5 4,5 5,0 5,0 min. 3,0 3,0 3,0 3,5 3,5 ls

43、and lgg, h l nom. min. max. lsmin.lgmax.lsmin.lgmax.lsmin.lgmax.lsmin.lgmax.lsmin.lgmax.45 43,75 46,25 14 19,25 50 48,75 51,25 14 19,25 18 24 55 53,5 56,5 16,25 25 18 24 60 58,5 61,5 21,25 30 16 22 18 24 23 30,5 65 63,5 66,5 26,25 35 21 31 18 24 23 30,5 70 68,5 71,5 31,25 40 26 36 22 32 23 30,5 75 7

44、3,5 76,5 36,25 45 31 41 27 37 21 28,5 23 30,5 80 78,5 81,5 41,25 50 36 46 32 42 25,5 38 23 30,5 85 83,25 86,75 46,25 55 41 51 37 47 30,5 43 26,5 39 90 88,25 91,75 51,25 60 46 56 42 52 35,5 48 31,5 44 95 93,25 96,75 56,25 65 51 61 47 57 40,5 53 36,5 49 100 98,25 101,75 61,25 70 56 66 52 62 45,5 58 41

45、,5 54 110 108,25 111,75 66 76 62 72 55,5 68 51,5 64 120 118,25 121,75 76 86 72 82 65,5 78 61,5 74 130 128 132 80 90 76 86 69,5 82 65,5 78 140 138 142 90 100 86 96 79,5 92 75,5 88 150 148 152 100 110 96 106 89,5 102 85,5 98 160 156 164 110 120 99,5 112 DIN EN 14399-7:2008-03 8EN 14399-7:2007 (E) Tabl

46、e 2 (continued)Dimensions in millimetresThread d M22M24M27M30M36 Pc 2,5 3 3 3,5 4 b (ref.) d 50 54 60 66 78 e 56 60 66 72 84 f 69 73 79 85 97 max. 22,84 24,84 27,84 30,84 37,00 dsmin. 21,16 23,16 26,16 29,16 35,00 max. 44 48 54 60,0 72,0 dkmin. 43 47 53 58,8 70,8 max. 30,5 33,5 37,5 42,5 50,5 i min.

47、 29,5 32,5 36,5 41,5 49,5 nom. 14,0 16,0 17,5 19,50 23,00 max.i14,9 16,9 18,4 20,55 24,05 kmin.j13,1 15,1 16,6 18,45 21,95 max. 2 2 2,5 2,5 2,5 r min. 1,5 1,5 2 2 2 max. 3,5 3,5 3,5 4,0 4,0 n min. 3,0 3,0 3,0 3,5 3,5 t max. 5,0 5,0 5,0 5,5 5,5 min. 3,5 3,5 3,5 4,0 4,0 lsand lgg, h l nom. min. max. l

48、smin.lgmax.lsmin.lgmax.lsmin.lgmax.lsmin.lgmax.lsmin.lgmax.65 63,5 66,5 25 32,5 70 68,5 71,5 25 32,5 28 37 75 73,5 76,5 25 32,5 28 37 80 78,5 81,5 25 32,5 28 37 31 40 85 83,25 86,75 25 32,5 28 37 31 40 90 88,25 91,75 27,5 40 28 37 31 40 34,5 45 95 93,25 96,75 32,5 45 28 37 31 40 34,5 45 100 98,25 101,75 37,5 50 31 46 31 40 34,5 45 110 108,25 111,75 47,5 60 41 56 31 40 34,5 45 41 53 120 118,25 121,75 57,5 70 51 66 45 60 34,5 45 41 53 130 128 13